Fix more lints #1892

Job	Run time
docs	3m 42s
clippy	2m 50s
msrv	1m 26s
nightly	4m 42s
rustfmt	13s
basics	1s
build_feature (alloc)	4m 13s
build_feature (cli)	4m 50s
test_doc	6m 2s
no_std (ubuntu-latest, minimal)	1m 18s
build_feature (cli,doc)	5m 2s
test_lib	5m 47s
no_std (macos-latest, minimal)	1m 31s
build_feature (cli,fmt)	4m 56s
build_feature (doc)	4m 39s
test_miri (rune)	4m 6s
test_rune	4m 8s
test_miri (rune-core)	59s
wasm	1m 42s
build_feature (workspace)	4m 13s
test_miri (rune-alloc)	6m 13s
build_feature (languageserver)	4m 39s
build_feature (byte-code)	4m 23s
build_feature (capture-io)	4m 6s
build_feature (emit)	4m 10s
	1h 29m 51s

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